442518122141605 has 4 divisors (see below), whose sum is σ = 531021746569932. Its totient is φ = 354014497713280.

The previous prime is 442518122141509. The next prime is 442518122141617. The reversal of 442518122141605 is 506141221815244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116450666495361 + 326067455646244 = 10791231^2 + 18057338^2 .

It is not a de Polignac number, because 442518122141605 - 2¹⁷ = 442518122010533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44251812214156 + ... + 44251812214165.

It is an arithmetic number, because the mean of its divisors is an integer number (132755436642483).

Almost surely, 2^{442518122141605} is an apocalyptic number.

It is an amenable number.

442518122141605 is a deficient number, since it is larger than the sum of its proper divisors (88503624428327).

442518122141605 is an equidigital number, since it uses as much as digits as its factorization.

442518122141605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88503624428326.

The product of its (nonzero) digits is 614400, while the sum is 46.

Adding to 442518122141605 its reverse (506141221815244), we get a palindrome (948659343956849).

The spelling of 442518122141605 in words is "four hundred forty-two trillion, five hundred eighteen billion, one hundred twenty-two million, one hundred forty-one thousand, six hundred five".